Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica

The epilithic biomass of an outflow stream at Potter Peninsula (King George Island, Antarctica) was studied from November 1996 to February 1997 by means of chlorophyll a concentration, dry weight and ash-free dry weight. The Autotrophic Index and the Lakatos classification were also used in order to...

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Autores principales: Pizarro, H., Vinocur, A.
Formato: JOUR
Materias:
biomass
epilithon
lake ecosystem
outflow
Antarctica
King George Island
South Shetland Islands
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07224060_v23_n12_p851_Pizarro
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_07224060_v23_n12_p851_Pizarro2023-10-03T15:36:55Z Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica Pizarro, H. Vinocur, A. biomass epilithon lake ecosystem outflow Antarctica King George Island South Shetland Islands The epilithic biomass of an outflow stream at Potter Peninsula (King George Island, Antarctica) was studied from November 1996 to February 1997 by means of chlorophyll a concentration, dry weight and ash-free dry weight. The Autotrophic Index and the Lakatos classification were also used in order to characterize the epilithic community. Several physical and chemical parameters were analyzed. Snow and ice melt greatly increased water flow through Tres Hermanos Lake and in the stream. Chlorophyll a concentrations fluctuated between undetectable and 3.5 μg cm-2 with a marked increase, which averaged 3 orders of magnitude, towards the end of the study period. Dry weight ranged between 299.9 and 13,118.7 μg cm-2 and ash-free dry weight between 70.8 and 996.9 μg cm-2. According to the Autotrophic Index and the Lakatos classification, the epilithon of the stream had a low mass with low organic component and large amount of inorganic sediment. The organic matter comprised a low proportion of chlorophyll a and a major proportion of probably detritus or bacteria, rather than fauna. Fil:Pizarro, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vinocur, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07224060_v23_n12_p851_Pizarro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic biomass
epilithon
lake ecosystem
outflow
Antarctica
King George Island
South Shetland Islands
spellingShingle biomass
epilithon
lake ecosystem
outflow
Antarctica
King George Island
South Shetland Islands
Pizarro, H.
Vinocur, A.
Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica
topic_facet biomass
epilithon
lake ecosystem
outflow
Antarctica
King George Island
South Shetland Islands
description The epilithic biomass of an outflow stream at Potter Peninsula (King George Island, Antarctica) was studied from November 1996 to February 1997 by means of chlorophyll a concentration, dry weight and ash-free dry weight. The Autotrophic Index and the Lakatos classification were also used in order to characterize the epilithic community. Several physical and chemical parameters were analyzed. Snow and ice melt greatly increased water flow through Tres Hermanos Lake and in the stream. Chlorophyll a concentrations fluctuated between undetectable and 3.5 μg cm-2 with a marked increase, which averaged 3 orders of magnitude, towards the end of the study period. Dry weight ranged between 299.9 and 13,118.7 μg cm-2 and ash-free dry weight between 70.8 and 996.9 μg cm-2. According to the Autotrophic Index and the Lakatos classification, the epilithon of the stream had a low mass with low organic component and large amount of inorganic sediment. The organic matter comprised a low proportion of chlorophyll a and a major proportion of probably detritus or bacteria, rather than fauna.
format JOUR
author Pizarro, H.
Vinocur, A.
author_facet Pizarro, H.
Vinocur, A.
author_sort Pizarro, H.
title Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica
title_short Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica
title_full Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica
title_fullStr Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica
title_full_unstemmed Epilithic biomass in an outflow stream at Potter Peninsula, King George Island, Antarctica
title_sort epilithic biomass in an outflow stream at potter peninsula, king george island, antarctica
url http://hdl.handle.net/20.500.12110/paper_07224060_v23_n12_p851_Pizarro
work_keys_str_mv AT pizarroh epilithicbiomassinanoutflowstreamatpotterpeninsulakinggeorgeislandantarctica
AT vinocura epilithicbiomassinanoutflowstreamatpotterpeninsulakinggeorgeislandantarctica
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